It didn't feel claustrophobic at all, as there is quite a lot of space in there and lots of room to stretch your legs. My girlfriend actually needed cushions as she was too small to see everything properly. The average time is about 30-35 minutes and they told me that the longest they've done is an hour. The only downside to it is that it takes almost 30 minutes to get it ready each time, in which you're just stood about waiting for something to happen, prior to which you signed forms that probably sold your children's souls to Red Bull.

With the pool, I'll upload some photos on it, even though it is one of those "you must see it to believe it" structures. It looks like it's 5 or 6 different pools all merged together as it's just so vast, but you can tell it's clearly designed to be this way.